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 A275259 Number of n X n 0..2 arrays with no element equal to any value at offset (-2,-1), (-2,1) or (-1,-1) and new values introduced in order 0..2. 0
 1, 9, 128, 2564, 126420, 14005180, 3224773976, 1565667773372, 1622686746762908, 3362812964412060544 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A275266. LINKS Table of n, a(n) for n=1..10. EXAMPLE Some solutions for n=4 ..0..1..0..1. .0..1..0..0. .0..1..0..2. .0..1..0..2. .0..1..2..1 ..0..1..0..1. .0..1..2..2. .0..2..0..1. .0..1..2..1. .2..1..2..0 ..2..1..0..1. .2..1..2..1. .0..2..0..1. .0..1..0..1. .2..1..0..0 ..0..1..0..1. .2..1..0..1. .0..1..0..1. .2..1..2..1. .2..1..2..1 CROSSREFS Cf. A275266. Sequence in context: A073014 A046754 A203425 * A064746 A232950 A184143 Adjacent sequences: A275256 A275257 A275258 * A275260 A275261 A275262 KEYWORD nonn AUTHOR R. H. Hardin, Jul 21 2016 STATUS approved

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Last modified December 5 10:56 EST 2023. Contains 367589 sequences. (Running on oeis4.)